40-cell Jumbo Planting Block with 40 Bio Sponges

Grow Bigger, Healthier Seedlings the "Bio" Way! This 40-hole seed-starting block and 40 growth-medium plugs are refills for Park's Jumbo Bio Dome,, or may be used with your own trays and covers to start seeds easily and economically! Need a new Jumbo Bio Planting Block for your 40-Cell Jumbo Bio Dome Seed Starting system? Here are one 40-cell Bio Planting Block plus 40 Bio Sponges. (They may also be used with your own trays and covers.)The 40-cell Jumbo Bio Planting Block is a long-lasting styrofoam block with 40 cells for planting (1 seed per cell). The cells are wider and deeper than those of our standard Bio Dome, allowing for bigger, better-rooted, healthier seedlings. Start your seeds like a pro with the Jumbo Bio-Dome!Bio Sponges are made of a remarkable, sponge-like rooting medium that supports fragile roots so completely that seedlings experience no transplant shock. If you need only a refill of the Jumbo Bio Sponges, click here. If you need a new Jumbo Bio Dome (with ventilated cover, planting block, tray, and bio sponges), click here.


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